Non-loosening hinge



March 22, 1966 L. R. ANDERSON 3,241,177

NON-LOOSENING HINGE Filed March 25, 1963 ATTORNEY United States Patent 3,241,177 NON-LOOSENING HINGE Lloyd R. Anderson, 5400 Pooks Hill Road, Bethesda, Md. Filed Mar. 25, 1963, Ser. No. 271,546

2 Claims. (Cl. 1655) The present application is a ,continuation-in-part of application Serial Number 763,962 filed Sept. 29, 1958, and now Patent Number 3,082,474 issued March 26, 1963.

The present invention relates to building hardware and more particularly to a hinge construction of general utility such as used on doors.

,In floor-mounted door closers particularly where the pivot axis is offset from the face of the door, the plate secured to the bottom edge of the door becomes loosened in normal operation due to the eccentric loading and to the strain produced by the door closer and the builtin door holder. Particularly in thetype of door closer disclosed in US. Patents 1,832,699 and 2,501,505 there is excessive bearing loading on the door closer shaft resulting in failure in the door closer.

An object of the present invention is to provide means for positively securing the door plate on the lower end of the door against loosening or rocking movement to assure long useful life of the floor-mounted door closer.

Other and further objects will become apparent as the description proceeds and upon reference to the accompanying drawings wherein:

FIGURE 1 is a perspective of a closed door mounted on a door closer and non-loosening pivot hinge of the present invention.

FIGURE 2 is a perspective of the top pivot hinge used in the mounting of the door of FIG. 1 but the hinge being of opposite hand.

FIGURE 3 is a transverse section through the pivot of the hinge shown in FIGURE 2.

FIGURE 4 is a fragmentary section taken on line 4-4 of FIGURE 1 showing the mortise mount of the pivot hinge.

FIGURE 5 is an enlarged fragmentary perspective of a portion of the door and door hinge leaf mounted on a floor mounted closer.

Upon more detailed reference to FIGS. 1 to 4 of the drawings, a door frame having a hinge jamb 20, a head jamb 21, and a lock jamb 22 receives a door 23 which is pivotally mounted by means of a top non-loosening pivot hinge 24 and a bottom door closer or pivot hinge 25 having a vertically extending shaft 26 which receives a hub 27 fixed to the door and plate 28 of a door dihedral angle door hinge leaf having a rigid strap or door heel plate 29 with the plates of the closer or pivot door hinge leaf being mortise mounted in mortise recesses in the door as clearly shown in FIG. 5 and being secured to the door 23 by means of screws 30 passing through countersunk openings in said plates. It will be noted that the bottom of the hub 27 is flush with the bottom surface of the end plate 28. The closer or pivot door leaf is secured to the shaft 26 by means of 'a key 31 of cylindrical shape having an upwardly tapering fiat portion against which a locking screw 32 is tightened to maintain the hub and thereby the hinge leaf in fixed position on the shaft 26.

The door closer is of the type shown in United States Patent 2,501,505 and has the shaft 26 urged to door closing position.

To accurately locate the axis of shaft 26 and the case 25 of the closer, the jamb leaf of the pivot hinge 24 is mounted in proper position and a plumb line 26A is dropped therefrom passing through the plumb line aperture 43 of the jamb hub 37, the plumb bob 26B thereon providing an exact point of reference for the location of the center 26C of the shaft 26 and after proper posiice tioning of the case 25, such case is grouted or otherwise secured in permanent position.

The upper end of the door 23 is hingedly mounted by the pivot hinge 24 which comprises a dihedral jamb leaf having a hinge jamb plate 33, and a head jamb plate 34 forming the dihedral angle jamb leaf which is received in mortise recesses in the hinge jamb 20 and head jamb 21 of the door frame. A door dihedral hinge leaf having a heel edge plate 35 and a head plate 36 fixedly connected together is received in mortise recesses in the heel edge and head end of the door, the various plates being secured in position by conventional screws.

An outwardly extending lug projects from the head jamb plate and carries a first hub 37 while an outwardly extending lug on the door head plate 36 carries a second hub 38 providing knuckle means which receive a pivot pin 39 providing pivotal connection for movement of the door leaf relative to the jamb leaf.

The hub 37 receives an anti-friction bearing 40 which engages the pivot pin 39. The pivot pin is removably secured to the door leaf hub 38 by means of a locking screw 41 threaded into a transverse opening, the lower end of the bore of the door hub being covered by a set screw 42 threaded into the lower end of the pin 39. The upper end of the jamb hub 37 is closed except for a small threaded plumb bob cord receiving bore 43 which is closed by a set screw 44. A thrust bearing 45 may be provided for use when the pivot hinge 24 is used at the bottom of a door and such thrust bearing may be of the anti-friction type to reduce friction and reduce wear. With the present dihedral arrangement the pivot hinge may be used at both ends of a door.

The free end of the head jamb plate 34 is beveled as shown at 303 to facilitate inserting the jamb dihedral angle into the communicating mortises in the hinge jamb and head jamb in a manner similar to that shown in FIGURE 2 of applicants prior Patent 3,021,554 and it will be evident that the door leaf dihedral angle may be modified in a manner shown in such patent to correspond with the bevel provided in many doors.

Since the hinge of this type does not take any of the load of the weight of the door it is necessary to provide hinge structure such as a door closer 25 on the floor to take the load. The load due to the weight of the door is offset on the axis of the door closer due to having the pivot thereof offset. To avoid damaging forces on the bearings of the shaft 26 of the door closer due to the offset of the pivot shaft 26 from the end door plate or leaf 28 (FIG. 4) a rigid strap or heel plate extension 29 is provided along the heel of the door forming a dihedral angle member or door leaf with bottom plate 28 to prevent rocking of the plate 23 in the event that the screws 30 of such plate 28 become loosened in use.

It will be apparent that various changes may be made in the structure within the spirit of the invention within the valid scope of the claims.

What is claimed is:

1. The combination of a door closer of the type for mounting in the floor with a stub shaft projecting above the floor adjacent the door opening with the door closer having means to bias the shaft to door closing position, and a door leaf for mounting on the portion of the stub shaft adapted to project above the floor, said door leaf comprising a bottom plate for mounting along the bottom edge of a door, an elongated rigid strap fixed to said bottom plate and extending upwardly therefrom preventing relative movement between said strap and said bottom plate, a boss fixed to said bottom plate, said boss having a stub shaft receiving opening of a size and shape accurately receiving the projecting portion of the stub-shaft, means to positively secure said boss to said stub shaft whereby said leaf including said bottom plate and said strap will be maintained in relatively fixed positions to each other, means to secure the strap to the heel edge portion of a door, and means to secure the bottom plate to the bottom edge of the door so that a door on which the leaf is mounted will accurately pivot about the vertical axis of said stub shaft and the axis of the hinge means supporting the door on which the combination door closer and door leaf are mounted.

2. The invention according to claim 1 in which the boss and the stub shaft receiving opening therein are positioned laterally of the strap and the bottom plate so the axis will be outside of the outer face of the door with which the door closer and leaf are used.

References Cited by the Examiner UNITED STATES PATENTS 26,375 12/1859 Richardson 16167 384,954 6/1888 Benedict 16-132 480,238 8/1892 Ranker 16135 867,913 .10/1907 COWell 16185 1,052,701 2/1913 Watters 16--169 1,076,689 10/1913 McKinney 16136 1,141,303 6/1915 Bennett et a1. 16132 2/1925 9/1929 11/1931 ll/l93l 2/1933 5/1935 6/1940 2/1950 3/1950 6/1950 l/1952 6/1952 4/1954 3/1957 9/1958 6/1961 2/1962 3/1963 Holm 16-167 Arocha 16162 Purdy 16162 Garrison 1655 Anderson 1652 Perl 16162 Bernhard 16134 Bissell et al 16135 Garrison 287-52.02

McDonald l6-162 Houlsby 16129 Whitrnore 16162 Conklin et al. 1652 Carroll 16128 Anderson 16167 Ferguson 16151 Anderson 16167 Anderson 16167 Austria.

JOSEPH D. SEERS, Primary Examiner.

DONLEY J. STOCKING, Examiner. 

1. THE COMBINATION OF A DOOR CLOSER TO THE TYPE FOR MOUNTING IN THE FLOOR WITH A STUB SHAFT PROJECTING ABOVE THE FLOOR ADJACENT THE FOOR OPENING WITH THE DOOR CLOSER HAVING MEANS TO BIAS THE SHAFT TO DOOR CLOSING POSITION, AND A FOOR LEAF FOR MOUNTING ON THE PORTION OF THE STUB SHAFT ADAPTED TO PROJECT ABOVE THE FLOOR, SAID DOOR LEAF COMPRISING A BOTTOM PLATE FOR MOUNTING ALONG THE BOTTOM EDGE FO A DOOR, AN ELONGATED RIGID STRAP FIXED TO SAID BOTTOM PLATE AND EXTENDING UPWARDLY THEREFROM PREVENTING RELATIVE MOVEMENT BETWEEN SAID STRAP AND SAID BOTTOM PLATE, A BOSS FIXED TO SAID BOTTOM PLATE, SAID BOSS HAVING A STUB SHAFT RECEIVING OPEING OF A SIZE AND SHAPE ACCURATELY RECEIVING THE PROJECTING PORTION OF THE STUB-SHAFT, MEANS TO POSITIVELY SECURE SAID BOSS TO SAID STUB SHAFT WHEREBY SAID LEAF INCLUDING SAID BOTTOM PLATE AND SAID STRAP WILL BE MAINTAINED IN RELATIVELY FIXED POSITIONS TO EACH OTHER, MEANS TO SECURE THE STRAP TO THE HEEL EDGE PORTION OF A DOOR, AND MEANS TO SECURE THE BOTTOM PLATE TO THE BOTTOM EDGE OF THE DOOR SO THAT A DOOR ON WHICH THE LEAF IS MOUNTED WILL ACCURATELY PIVOT ABOUT THE VERTICAL AXIS OF SAID STUB SHAFT AND THE AXIS OF THE HINGE MEANS SUPPORTING THE DOOR ON WHICH THE COMBINATION DOOR CLOSER AND DOOR LEAF ARE MOUNTED. 